I disagree. I use the salutation and the "sign-offs" to indicate different levels of seriousness. If somethings not urgent or as serious I will, along with a su

I disagree. I use the salutation and the "sign-offs" to indicate different levels of seriousness. If somethings not urgent or as serious I will, along with a suitable title of course, use a more casual greeting. I appreciate when others do the same for me.